Know all about Shale and Aplite properties here. All properties of rocks are important as they define the type of rock and its application. Shale belongs to Sedimentary Rocks while Aplite belongs to Igneous Rocks.Texture of Shale is Clastic, Splintery whereas that of Aplite is Granular, Graphic. Shale appears Muddy and Aplite appears Veined or Pebbled. The luster of Shale is dull while that of Aplite is dull to pearly to subvitreous. Shale is available in black, brown, buff, green, grey, red, yellow colors whereas Aplite is available in black, grey, orange, pink, white colors. The commercial uses of Shale are creating artwork, pottery and that of Aplite are curling, gemstone, laboratory bench tops, small sculptures, tombstones.